Soil pulverizer



ug- 25, 1931- G. M. souLE SOIL PULVERIZER Fied Nov. s. 1927 2 Sheets-Sheet 1 Filed Nov. 16, 1927 2 Sheets-Sheet 2 Patented Aug. 25, 1931 UNITED sTATEs PATENT OFFICE GEORGE M. SOULE, OF CLEVELAND, OHIO, ASSIG-NOR TO lTHE PLOW-MATE ING., OF

CLEVELAND, OHIO, A CORPOE-ATION OF OI- IIO SOIL PULVERIZER l.Application filed November 1 6, 1927. Serial No. 233,542.

This invention relates to furrow slice pulverizers for use in connection with breaking plows. An object is to provide a simple and economically' manufactured device for sup- 5 porting .a set of pulverizing blades in the desired position with reference to the moldboard of the plow. A further object is to provide an improved arm for supporting a set of blades from the plow beam, free from the mold-board, which arm may be easily and quickly adjusted to operate with any size and type of breaking plow. Further objects include the provision of an improved and sim- N plified connection between a holder for a set of blades and a rigid support, which connection will allow substantially universal yielding movement between the blades and support, but which will normally hold the blades in a denite position and return them to this position after the yielding takes place.

F urther objects and features of the invention will become apparent from the following description relating to the accompanying 4, drawings wherein is shown the preferred form. The essential novel characteristics will be summariz'ed in the claims..

In the drawings, Fig. 1 is a rear elevationl of a plow with the inproved device attached n operating position; Fg. 2 is a longitudnal cross-sectonal vew of the arm taken generally along 'the line 2-2 on Fig. 1; Fig.

is a rear end elevation of the free end of the arm showing particularly the yieldi'ng connection to allowsidewise movement of the blades in clearing an obstruction. Thisffigure shows the parts adjusted for use'with a left hand plow. Fig. 4 is a detail cross-sectional view showing the yielding device in entirety; Figs. 5 and 6 are detail cross-sectional views as indicated by the lines 5-5 .and 6-6 on Fig. 2; Fig. 7 is a dctail view showing a'device to prevent slippage of the nor- `mally rigid arm section; Fig. 8 is a crosssectional view of the arm attaching parts shown inV Fg. 2, but in a different relation to the plow beam, and Fig. 9 is a cross-sectional detail view of a suitable blade clampi'ng device as indicated by the line 9-9 on Fig. 8.

The major parts of the embodiment illustrated comprise: A longitudinally fixed arm section'l; a longitudinally adjustable section. 2; an arcuately adjustable plate 3 mounted:

on the free endof the section 2 and position-V` able about a bolt 4 as a center; a blade hold-.

ing member 5 yieldingly mounted on the plate 3; blades, three in number as shown,V

designated 6, 7 and 8, and springs 9 and 10. A well known type of plow is illustrated to bring out the relationship of the device thereto, the plow beam being designated A, the

mold board C and the land-side B. It is to. be understood that wherever the above plow*v parts, such as beam and mold board, are mentioned in the following specification and claims, these terms are not intended to limit' the scope of my invention, but to explain the use thereof in connection with the most common form of plow. For example, any rigid frame portion of the plowis toibe consideredV the equivalent of the beam, and any soil turn-` nt, or moving element the equivalen't of la mold board.

The invention contemplates the provision of a universally adaptable device, namely for right or left hand plows of various makes, types and sizes, hence considerable adjustment is vnecessarily provided for. Moldboards vary in length, distance of the delivin which the'invention meets the various con- V dtons as above outlined', willl be presently shown.

The arm section 1 may be attached at any point on the beam and on any face depending on which mode of attachment will-bring the blades with their shank portions just: clear of the delivery edge of the mold-board and int-he most effective position to cut into .er'y edge from the beam, height of the deliv-L a ery edge from the furrow channel bottom,

the furrow slice just as it leaves the board and while still moving. As shown the section 1 rests on an adapter platel which may be slightly dished on both major surfaces to better fit the beam and which is somewhat wedge-shaped in order that it may be reversedend for end if necessary to vary the inclination of the whole arm in a substantially horizontal plane. If desired, both sides of the plate may be serrated or roughened for better gripping` effect on the beam, and to hold it against slipping out of place due to the wedge shape. The plate is slotted at 16 to receive clamping bolts 17 and 18, the former being an L bolt passing along two adjacent sidesof the beam and the latter being an eye bolt passing along one side only. One end of the bolt 17 passes through the eye and carri'es. a nut 17a. The other end of the bolt 17 and the end of 18 opposite the eye pass through the plate and the arm section 1 and carry nuts. 17-5 and 18a respectively.

, In Fig. 8 V.the arm is shown attached by meansof the same bolts but at the side of the A. beam instead of at the edge. The relations Will be easily understood from inspection. It is to be understood that the arrangement is adapted for securng the afrm to the beam along any face and in any position along the downwardly extending portion of the beam.

The arm section 1 is adapted to be made from pressed steel for the sake of lightness of Construction and for Strength, as are the parts 2, 3'and 5. The section 1 comprises a clamp portion l20 including clamping flanges 21 ada-pted to receive a series of bolts 22, the portion V20 embraoing the shank of the section 2. V Intermediately of its ends the section 1 .is

formed into a flattenedtapered tubularshape at 2.3.including inturned fianges 24 (Fg. 5),

fjorming in effect, together with an elongated aperture 2,5, a slot for embracing the bolt 17. The extreme end of the section 1 has an arcuate slot formed by fianges 26 and 27 for emz bracing the bolt18. The purpose of the lat-V terslotisto provide for adjustment of the entire arm in asubstantially vertical plane in-orderto raise or lower the blade mounting asretjuired because, as ahovementioned, the

fmold-board varies in distance from the furrow 'channel botton1,.and because it is sometimes impossible to arbitrarily choose the point at which the arm is to attach to the beam. VfIf necessary,.because of heavy strain,

the edges ofthe flanges 26 and 27 may be notched as at 26a and 27a (Fig. 7) to receive projections 28 ona washer beneath the nut l8a to, elfectively. prevent slippage between the bolt 18 and. the section 1 at the slot.

VVhen the arm is properly adjusted and the '35 172 will serve to force thebolt '17 toward the beam for more tightly clamping itbetween the two bolts.

The telescoping arrangement of the arm sections 1 and 2 provides for elongating or shortening the effective reach of the arm, and as shown, the portion 30 of the section2 is in general cylindrical, so thatit may be turned to change the inclination of the blades as a whole. This is important since the uppermost blade should be disposed foi'wa'dly of 75 the loivermost blade in the direction of plowmg to better eonform to the Condition of the furrow slice as it leaves the mold-board. In

-adapting the device for use with a left-hand plow the blade mounting is turned considerably from the positionv it requires for right hand plow use. Preferably the adj acent surfaces ofthe telescoping portions of the arm sections 1 and 2 are partially longitudinally corrugated as shown at 33V and 34 to aid the 5 clamp in preventing relative-rotational movement between the sections. Thesection 2 may Vconsist simply of a tube fiattened out at 31 to receive the plate 3 and having its extreme end offset as at 32 .forwardly of the or any obstruction encountered with a glancing blow, and to yield edgewise for larger and more refractory obstructions. The mounting member 5 pivots about thebolt 4 as a center, and the flatwise yielding of the blades is permitted by reason of the tension spring 10. e

Direct or edgewise yielding is permitted by reason of the Compression Spring 9, which surrounds the pbolt 4 and reacts at one end against an adjustable nut 4aon the bolt, and

at the other againstthel member. 5. To guide the member back intoplace, after the direct yielding, themember 5 andplate 3. have com,-v plementary depressed portions 35and 36, adjacent the bolt 4.V The depressions determine the pivotal center of the member 5; hence'the openingin the member 5'for the bolt 4'may be large enough to allow more or less universal movenent between the arm and blade mounting. .As shown one anchorage for the sprin 10 eomprises a rivet in an ear 46 on the member 5. shown directly on the plate 3. In moving against the force of the Spring 9 the mount,- ing cants aboutthe rivet head as a fulcrum (see Fig. 4). The opening37 in the member l..

5 is preferably elongatedin the direction of the blades to allow the canting movement, while laterallyl guiding the mounting along the bolt to prevent excessive play.

.lfVhile it is highly desirable'toallow flat- The head ofl the rivet. rests as i desirable to allow this movement, at least to any appreciable extent, in a direction which would allow any of the blades to dig down into dead soil. This will be appreciated with.

reference to Fig. 1. Gonsequently provision is made to prevent rotation of the mounting in one direction in either right or left hand plow use. Referring to Fig. 3 it will be noted that the ear 46 on the member 5 is prevented from moving counter-clockwise by reason of one of two abutments formed by short flanges 48, on the laterally opposite edges of the plate 3. The anchorage for the spring 10 at the plaJ e 8 comprises an eye bolt 50 which may be noved from one openingV as at 51 to another as at 53 along a flange 52 of the plate 8. The eye bolt nut has a blunt Wedge face engaging a depression 54 in the flange, the nut being for adjusting the tension of the spring, and the wedge and depression cooperating to maintain the adjustment. After the spring is properly positioned and tensioned, the plate 3 may be swung up or down and clamped in place by reason of a bolt and slot connection at 55-56 between the plate and arm section 2. It will be notecl that for right-hand plow use (Figs.

1 and 4) one end of the slot is occupied by the bolt and the spring is anchored at'51 while for left-hand plow use (Fig. 3) the other end of the slot is occupied by the bolt and the spring is anchored at 58. This is to direct the blades downwardly about as shown in Fig. 1 in either case, and to render only one of the two abutments 48 effective at a time.

The preferred clamping device for the blades comprises a sector shaped extension 60 .of the mounting member 5, suitably channeled as at 61 and fianged at 62, for receiving the forward edges of the blade shanks, and a separate clamp member 65 channeled as at 66 for the rear edges of the blades. The blade clamping members may be drawn together on the blades as by bolts 67.

I claim 1. In a device of the class described, a rigid 'arm section adapted to be secured to a plow,

a longitudinally adjustable arm section in telescoping relation to the rigid section, a plurality of elongated blades one above the other and mounted on the second mentioned section, the longitudinally adjustable section being turnable with reference to the rigid section to position the uppermost blade forwardly of the adjacent blades in the direction of plowmg.

2. In a breaking plow, a plurality of blades positioned adjacent the delivery end of the mold-board, apressed metal plate having a rounded depression, means carried by the plow and arranged to adjustably support the plate, a blade holding member having a rounded portion substantially conplementary to the depression in the plate, thus forming` a ball and socket joint, there being means tending to hold the plate andsaid member together, and resilient means interposed between the plate and said member to yieldingly restrain rotationa'l movement of the said members.

3. In a soil pulverizer, a support, a holder for pulverizing tools pivotally mounted on the support adapted to be attached to a plow, a Spring interposed between the holder and support for restraining pivotal movement, and means including spaced abutment means and correspondingly spaced anchorages for the Spring on the support for positively preventing pivotal movement of the holder m one direction when used ona right hand plow and in the opposite direction when used on a left-hand plow.

4. In a soi'l pulverizer for plows, a set of blades disposed a-djacent the rear edge of the mold board, an arm for supporting the blades and means for securing the arm to the plow beam, including` a bolt member surrounding three sides of the plow beam, and terminating` in threaded ends on the fourth side of said plow beam, said arm having a longitudinal slot through which one end of said bolt member passes and a transverse slot through which the other end of said bolt member passes, and securing means associated with the threaded ends of said bolt member for securing said arm in different positions, relative to the support for said plow.

5. The combination in a soil pulverizer for p'lows of a set of blades disposed adjacent the delivery edge of the mold board, an arm for supporting` the blades and means for securing the arm to the plow beam, including a bolt member adapted to Surround three sides of said plow beam, said arm having a longitudinal slot through which one end of said bolt member passes and a transverse slot through GEORGE M. souLE.

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